I consider Wrestlemania XX to be the last great show. There have been good, even great, PPV's since but that one was the last that had such great build and such a great payout at the end. And not just with the main even. Christian/Jericho had some great build, the Undertakers return as the deadman was built awesomely, Cena was still hot, and even Lesnar/Goldberg had great build going into it. It went downhill after that.